Table 1.
Baseline characteristics of patients undergoing isolated coronary artery bypass grafting (CABG)
| Isolated CABG (n=2532) | |
|---|---|
| Age, year, mean±SD | 67.4±9.2 (2532) |
| Male | 82.5 (2088/2532) |
| Caucasian ethnicity | 87.9 (2219/2525) |
| BMI, kg/m2, mean±SD | 28.5±4.5 (2532) |
| Smoking status | |
| Current smoker | 19.7 (499/2530) |
| Ex-smoker | 42.4 (1073/2530) |
| Never smoked | 37.9 (958/2530) |
| Diabetes mellitus | 44.6 (1130/2532) |
| Insulin-treated diabetes mellitus | 14.5 (367/2532) |
| Hypertension | 84.6 (2129/2516) |
| Dyslipidemia | 77.0 (1925/2501) |
| Renal functiona | |
| Normal | 46.4 (1175/2532) |
| Moderately impaired | 42.1 (1067/2532) |
| Severely impaired | 11.5 (290/2532) |
| Cerebrovascular diseaseb | 8.5 (214/2524) |
| Peripheral vascular disease | 16.3 (409/2502) |
| Pulmonary disease | 13.9 (352/2532) |
| Pulmonary hypertension | 8.1 (206/2532) |
| Previous myocardial infarction | 42.4 (1068/2517) |
| Anginal status CCS III and IV | 32.8 (830/2532) |
| Atrial fibrillation/flutter | 7.8 (197/2532) |
| Previous PCI | 24.6 (623/2532) |
| Previous cardiac surgery | 1.3 (32/2532) |
| Active endocarditis | 0.0 (1/2532) |
| Extent of coronary artery disease | |
| 1 vessel disease | 1.9 (49/2517) |
| 2 vessel disease | 16.4 (412/2517) |
| 3 vessel disease | 81.7 (2056/2517) |
| Left main disease | 41.2 (1033/2510) |
| LVEF≤50% | 32.1 (814/2532) |
| EuroSCORE II, median (IQR, n) | 1.4 (0.9–2.3, 2532) |
a
Severe renal impairment: creatinine clearance less than 50 ml/min; moderate renal impairment: creatinine clearance 50–85 ml/min.
b
Previous stroke, transient ischemic attack, or coma.
CCS, Canadian Cardiovascular Society; IQR, interquartile range; LVEF, left ventricular ejection fraction; PCI, percutaneous coronary intervention.